Drug mixer



Patented July 5, 1927.

UNITED STATES WILLIAM 1v. SHAW, oF FARGO, NORTH DAKOTA.

i DRUG MIXER.

Application led November 5, 1925*. Serial No. 616,999.

My invention relates to a drug mixer wherein it is desired to provide means for the druggist to more thoroughlymix the.

various medicinesto thoroughly mix the in` gredients ofy the sametogether and often this is neglected by. reason. of the fact that the druggist is busy and does not have a suhcient time to carefully mix the medicine y together.

A feature of the invention resides in means for thoroughly and completelyV mixing the drugs in a mixing mortar so that when the Vmixer has operated a certain length of time, the ingredients placedl in the mortar are thoroughly and completely mixed or combined together, so as to give a more uniform consistency to the same. This is accomplished by a mixing device having .a pair of mixers of a conicalshape and adapted to operate in a conical mortar in a manner to rotate in the mortar and thereby thoroughly and completely mix the'ingrerdients within the same.

The invention also includes mea-ns formed in theV conical mixers so as to have a tendency to work the drugs toward the mortar rather than out of the same during the rotation of the mixers., The grooving is only necessary in a certainV class of'mixers and myy invention can'be used as a mixer without this groovedrmeans.

My invention includes a mixer wherein a unit is provided adaptedtohold the mortar in place against rotation and to permit thel mortar to vbe separated lfrom the 1 mixing members so that the mortar can be thoroughly cleansed when it isdesired and means whereby the mixers canbe raised out of engagement with the mortar, p f

I include in my invention removable mixing members so that different mixers can-be easily and readily applied and so that the mixers can be interchanged which permits the removing of the conical mixers so that they can be cleansed orreplaced if it isdesired. A v

Y These features together with other details of construction will be more vfully and clearly set forth in the specilicationand claims in the following description. I

1n the drawings forming partof my specvificat-ion,

PATENT VOFFICE-.A

Figure 1 isa side view of my mixer, Y partly illustrated 1n cross `section to dis- Y close the detail of construction of the same.

Figure 2 is a section on the line 2-2 of Figure 1.

Figure 3 illustrates one Vof the conical mixers removed from the operating mixer.

Figure 4 Vis an alternative view of one of the mixers with the directing grooves formed. therein. l i

In thev drawings my drug mixer A is provided with a supporting standard B which projects upwardly from the base portion Cy and which is adapted to slidablyv support the operating motor l The mixer A is of a simple construction with the parts arranged in a manner so as to be conveniently placed upon the mixing counter of a drug or pharmacist laboratory orl'any-other laboratory where it is desired to mix ingredients and drugs in a manner so as to save time for thedruggist or the chemist. The mixer 'A can be made of any suitable size, but ordinarily is of a small nature and adapted particularly kfor use for pharmacists to mix medicines and other ingredients in the-pharmacists laboratory; f

The base C is adapted to support' the conical shaped mortar 10 which is provided with a base 11 formed with a recessed square or angular socket 12vinto which the lug or" a similar shape 18 projects so as to hold the mortar 10 stationary and against rotation when in position upon the base C. vThe mortar 10 is of a conical inner shape and is provided with an annular flange 111 about the top so as to hold the ingredients within the same. Y My mixer is adapted to support the motor Dby the slidable bracket lwhichy is held in operative position by the spring catch 16,

v this catch having an ordinary construction and adapted to engage ina suitable notch 17 formed' in the standard 18 ofthe mixer A. Y A. coil spring 19 positioned within the standard 18 is adapted to bear' against the Y.

as to hold the motor in alinement with the mortar l0. rlhis permits the shaft 22 ot the motor D to be positioned practically coaxial with the center of the mortar l0.

rlhe motor D is adapted to support a housing 23 in which gear piuions are positioned and which are adapted to mesh with the pinion 25 carried by the sliait 22. The pinions 24 mesh with the internal annular gea-r 26 formed in the lower portion ot the housing 23, so that when the motor @roperates the pinion 25 is rotated Lrnd the pinions 24e are adapted to be caused to be rotated about the housing; 23. y n

Connected to each ot the pinions 24 l provide arms 27' which extend inwardly and connect with the head 28 'termed on the shalt 29. The shalt 29 is positioned in a depending` tubular portion 80, formed extending centrally trom the lower portion ot the casing ,3 and is adapted to be closed by the nut 3l threaded to the bottom oi1 the same.

rlhe shaft 29 is provided with a key 32 which slidably Vengages in a suitable hey recess 'formed in the enlarged end 38 oi' the bracket 3d. The bracket 3% is termed with a socket or opening' 35 'into which the end of the shalt 29 which Iarries vthe key 32 is adapted to slide. rlhe bracket elli is bifurcated to torni supporting' ends 36 which are adapted to removably support the conical mixers 37. The mixers 3'2" are adapted to bear against the inner surface 38 ot the mortar 10.

rlhus when the motor operates, the sliait 22 will operate the pinions 241 to carry the same about in the casing;` 23 and through the operating arms 27,A cause lthe shaft 29 to rotate and therebyl cause the bracket to rotate and carry the mixers 3'? to rotate over the surface 38 ot the mortar l0.- ln this manner the ingredients placed within the mortar can be thoroughly and completely mixed.

To facilitate the more effective operation of the mixers 37, l providega coil spring' l() positioned between trie head 28 andthe enlarged portion 38 oli the braa'let 31tto hold the conical mixers 37 bearing; under spring tension against the mixing sur'jace 38 ot the mortar l0. rl`his .spring e0 compensates for inequalities ot material within the mortar 'i0 so that the ii Yclients within the mortar will be thorougnly mixed and the mixing members 3T can operate over the material without binding in the rotation and operation ot the saine.

Either ot the mixing` members 37 can be removed by the thumb nut 42 so that the mixing` members 87 can be changed or replaced at any time, or taken oft tor cleaning it it is desired.

In the mixer 37 illustrated in Figure 4, l have shown a series oit grooves running` about the same which are designed to cause the material to be forced downward in the mortar to prevent the same Jfrom working up out ot the mortar when it is being' mixed. ln other words, these grooves 1xeep the material troni slipping' upward by reason ol' the pressure of the mixers in the mortar and Vhave a tendency to force the material down to the lowest point in the mortar. lt is obvious that these grooves or serrations or rations in the mixers 37 can be ot any suitable design and shape so as to accomplish the purpose ot holding' the materialV down in the mortar while it is being' mixed.

ln operation the motor D is pushed down on the standard 18 until the catch liengages in the notrh 'i7 and then is operated to cause the conical members 3'? to rotate about in the mortar. The mortar l0 is held against rotation by the lug l?) and'when the ingredients within the same are thoroughly mixed. by releasing; the cat-ch 16 the motor D with the mixers 37 are elevated by the spring 19 and the mortar l() can be removed from the base C. lt is quite obvious that a mixer otthis nature is desirable in a pharmacy or ina laboratory where considerablc'mixing' is done and where the drug'gjist or chemist may necessarily need to be doing' other things while the mixing' is in progress. d This mixer accomplishes these results. y

The ingredients placed within the mortar and mixed by the members 37 are uniformly combined together, whereas, vinl ordinary hand mixing by the druggrji st, which in many instances is a long,` tedious operation, the extent ot mixing' depends entirely upon the effort of the druggist or operator mixing' the drugs or ingredients. Therefore, yit is quite apparent that a mixer ot lthis kind is most desirable, not only. as a saver ol time, but also in providing; a more efficient means ot combining` ingredients together where a.

mortar mixer ot this nature is desired.

ln accordance with the patent statiitesl have described the principles ot operation ot my mixer and while l have illustrated a particularV formation and construction in my moved into andV out ot operation on thev standard to provide a mixer tor drugs and articles ot a similar nature.

2. A mixer including, contacting rollers associated with a mortar adapted to Arotate by electrical propulsion to mix ingredientsl thoroughly together within the mortar and means whereby the mortar and mixing members may be separated to permit the ingredients within the mortar to be removed or placed therein.

3. A drug mixer comprising an electric motor, a standard Vfor slidably supporting said motor, a transmission associated with said motor and carried thereby, a mixer comprising contacting cone-shaped rollers associated withsaid transmission, a mortar members to be operated when said motor isl operated, a receiving mortar, means for holding said mortar operatively associated with said mixing members and means for causing Said mixingmembers to bear within said mortar under spring tension when in op*- eration. l

5. A drug mixer including, amortar, conical contacting mixing members adapted to be operated in said mortar in a manner to thoroughly and completely mixV ingredients placed within said mortar, and motor means adapted to operate said mixers for the purposes specied. v

6. A drug mixer including, an electric motor, a standard for slidably supporting said motor, spring means for elevating said` motor on said standard, a-spring catch for holding said motor in operative position, a mortar associated with said standard and held axial in relation to' said motor, mixing members adapted to bear against they, `inner surface .of said mortarA and against each other and transmission means associated between said mortar and said mixingV -members adapted to cause -said mixers to operate about saidI mortar and to compensate :tor inequalities in the operation of the same to prevent binding and to permit said members to thoroughly mix ingredients within said mortar.

7. A drug mixer including, a motor, a transmission associated with said motor, contacting mixing members connected to said transmission, aY mixing bowl, means for holding said mixing bowl associated with saidvv mixing members in a manner so that said mixing members will travel'over vthe inner surface of said mixing bowl in the operation of said vmotor to work and thoroughly mix ingredients placed in said mixing bowl, by the Vcontacting of the mixing members over the surta-ce of said mixing bowl andv against each other.

WILLIAM N. SHAW. 

